Anyone know where I can locate one of these? I have heard that you can make them work but they need to be shimmed...? Any info would be helpful. Thank you!
40-X One piece Base
- Thread starter Midodgeguy
- Start date
Re: 40-X One piece Base
Try
Cameron Murphy
Murphy Precision
800-553-8527
He can do almost anything, and the worlds best customer service.
Try
Cameron Murphy
Murphy Precision
800-553-8527
He can do almost anything, and the worlds best customer service.
Re: 40-X One piece Base
I have heard on the 722 action type there is a slight elevation difference, hence my mention of the shim.
I have heard on the 722 action type there is a slight elevation difference, hence my mention of the shim.
Re: 40-X One piece Base
The thin aluminum sides of a beer can make great shims and can be cut with a knife on scissors. Just a thought. I use brass shim stock from ENCO.com. They are cheap and shipping is fair. You can order a package of a bunch to thicknesses and then shim it like you need. Donald
The thin aluminum sides of a beer can make great shims and can be cut with a knife on scissors. Just a thought. I use brass shim stock from ENCO.com. They are cheap and shipping is fair. You can order a package of a bunch to thicknesses and then shim it like you need. Donald
Re: 40-X One piece Base
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: SDWhirlwind</div><div class="ubbcode-body">All of these from CMP are old enough and will have the lower rear bridge despite which model receiver. 722 and 700's take the same bases. </div></div>
I read that only the 722's had it...
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: SDWhirlwind</div><div class="ubbcode-body">All of these from CMP are old enough and will have the lower rear bridge despite which model receiver. 722 and 700's take the same bases. </div></div>
I read that only the 722's had it...
Re: 40-X One piece Base
Hummm, seems someone should either offer nicely cut shims and/or bases to fit these older receivers. I realize there aren't a whole lot of CMP 40Xs coming into the market now, but it's probably a few hundred.
SDWhirlwind, nice setup with the Redfield scope and I assume Leupold bases and rings and a big thanks for the info. and pic!
Hummm, seems someone should either offer nicely cut shims and/or bases to fit these older receivers. I realize there aren't a whole lot of CMP 40Xs coming into the market now, but it's probably a few hundred.
SDWhirlwind, nice setup with the Redfield scope and I assume Leupold bases and rings and a big thanks for the info. and pic!
Re: 40-X One piece Base
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: EXTREMEPREJUDICE</div><div class="ubbcode-body">Try
Cameron Murphy
Murphy Precision
800-553-8527
He can do almost anything, and the worlds best customer service. </div></div>
Maybe we could get Mr. Murphy interested in making a run for these receivers? There seems to be enough of us to maybe get him mildly interested in our projects.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: EXTREMEPREJUDICE</div><div class="ubbcode-body">Try
Cameron Murphy
Murphy Precision
800-553-8527
He can do almost anything, and the worlds best customer service. </div></div>
Maybe we could get Mr. Murphy interested in making a run for these receivers? There seems to be enough of us to maybe get him mildly interested in our projects.
Re: 40-X One piece Base
Thanks to SDW tipping us off about the change that was made to these receivers, and the current manufactured 700 bases being incorrect for these older 40X rifles built on 721 and early 700 receivers I was able to find a nice old set of Leupold bases marked 721. You can also order Weaver # 35 & 36 and they will be correct if I understand the Midway site for 721 bases. With 1200 more of these fine old rifles being shipped from CMP this will come up a lot. Thanks again SDW, and great picture of your shims. Regards
Thanks to SDW tipping us off about the change that was made to these receivers, and the current manufactured 700 bases being incorrect for these older 40X rifles built on 721 and early 700 receivers I was able to find a nice old set of Leupold bases marked 721. You can also order Weaver # 35 & 36 and they will be correct if I understand the Midway site for 721 bases. With 1200 more of these fine old rifles being shipped from CMP this will come up a lot. Thanks again SDW, and great picture of your shims. Regards
Re: 40-X One piece Base
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Carnivore</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: EXTREMEPREJUDICE</div><div class="ubbcode-body">Try
Cameron Murphy
Murphy Precision
800-553-8527
He can do almost anything, and the worlds best customer service. </div></div>
Maybe we could get Mr. Murphy interested in making a run for these receivers? There seems to be enough of us to maybe get him mildly interested in our projects. </div></div>
I would certainly be interested in offering bases for Remington 40X / 722 rifles. If anyone is willing to work with me on getting some reasonably accurate dimensions, it wouldn't be a problem to do a small run, or even just a few, as once the necessary dimensions are known and plugged into some macros, it's only a matter of minutes to change from making one base to another.
- Cameron
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Carnivore</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: EXTREMEPREJUDICE</div><div class="ubbcode-body">Try
Cameron Murphy
Murphy Precision
800-553-8527
He can do almost anything, and the worlds best customer service. </div></div>
Maybe we could get Mr. Murphy interested in making a run for these receivers? There seems to be enough of us to maybe get him mildly interested in our projects. </div></div>
I would certainly be interested in offering bases for Remington 40X / 722 rifles. If anyone is willing to work with me on getting some reasonably accurate dimensions, it wouldn't be a problem to do a small run, or even just a few, as once the necessary dimensions are known and plugged into some macros, it's only a matter of minutes to change from making one base to another.
- Cameron
Re: 40-X One piece Base
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Cameron Murphy</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Carnivore</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: EXTREMEPREJUDICE</div><div class="ubbcode-body">Try
Cameron Murphy
Murphy Precision
800-553-8527
He can do almost anything, and the worlds best customer service. </div></div>
Maybe we could get Mr. Murphy interested in making a run for these receivers? There seems to be enough of us to maybe get him mildly interested in our projects. </div></div>
I would certainly be interested in offering bases for Remington 40X / 722 rifles. If anyone is willing to work with me on getting some reasonably accurate dimensions, it wouldn't be a problem to do a small run, or even just a few, as once the necessary dimensions are known and plugged into some macros, it's only a matter of minutes to change from making one base to another.
- Cameron </div></div>
Mr. Murphy:
I bought a spare barrel receiver combo for spare parts when I receive my two rifles. I would be happy to send it to you to pull whatever dimensions you would like to get off the piece. I'll give you a call this week and arrange for delivery to you just as soon as it arrives in my hands. They say 7 to 14 days I should have it.
Best Regards.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Cameron Murphy</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Carnivore</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: EXTREMEPREJUDICE</div><div class="ubbcode-body">Try
Cameron Murphy
Murphy Precision
800-553-8527
He can do almost anything, and the worlds best customer service. </div></div>
Maybe we could get Mr. Murphy interested in making a run for these receivers? There seems to be enough of us to maybe get him mildly interested in our projects. </div></div>
I would certainly be interested in offering bases for Remington 40X / 722 rifles. If anyone is willing to work with me on getting some reasonably accurate dimensions, it wouldn't be a problem to do a small run, or even just a few, as once the necessary dimensions are known and plugged into some macros, it's only a matter of minutes to change from making one base to another.
- Cameron </div></div>
Mr. Murphy:
I bought a spare barrel receiver combo for spare parts when I receive my two rifles. I would be happy to send it to you to pull whatever dimensions you would like to get off the piece. I'll give you a call this week and arrange for delivery to you just as soon as it arrives in my hands. They say 7 to 14 days I should have it.
Best Regards.
Re: 40-X One piece Base
(tagged so I can find it later) I'm going to need a base when mine shows up too.
(tagged so I can find it later) I'm going to need a base when mine shows up too.
Re: 40-X One piece Base
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Carnivore</div><div class="ubbcode-body">
Mr. Murphy:
I bought a spare barrel receiver combo for spare parts when I receive my two rifles. I would be happy to send it to you to pull whatever dimensions you would like to get off the piece. I'll give you a call this week and arrange for delivery to you just as soon as it arrives in my hands. They say 7 to 14 days I should have it.
Best Regards.</div></div>
Unfortunately I'm not an FFL, so I wouldn't be able to receive your action. I can however send out a kit containing oven hardenable modeling clay in a tray that you can use to make an impression of the top of an action. After baking to hardening it, ship it back and I can get the measurements I need from that.
- Cameron
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Carnivore</div><div class="ubbcode-body">
Mr. Murphy:
I bought a spare barrel receiver combo for spare parts when I receive my two rifles. I would be happy to send it to you to pull whatever dimensions you would like to get off the piece. I'll give you a call this week and arrange for delivery to you just as soon as it arrives in my hands. They say 7 to 14 days I should have it.
Best Regards.</div></div>
Unfortunately I'm not an FFL, so I wouldn't be able to receive your action. I can however send out a kit containing oven hardenable modeling clay in a tray that you can use to make an impression of the top of an action. After baking to hardening it, ship it back and I can get the measurements I need from that.
- Cameron
Re: 40-X One piece Base
OH, I see you live in California; my condolences! I will be happy to help make this happen. I am out of town this week and next, but as soon as I get the receiver and two rifles in the next week or two I will call and we can get this don for the guys. If you send me three chunks of clay I'll do all three receivers if you want to do some averaging.
John
OH, I see you live in California; my condolences! I will be happy to help make this happen. I am out of town this week and next, but as soon as I get the receiver and two rifles in the next week or two I will call and we can get this don for the guys. If you send me three chunks of clay I'll do all three receivers if you want to do some averaging.
John
Re: 40-X One piece Base
dlc356 - The bases would be the same price as our regular bases, $137.60 for stainless, and $193.60 for titanium.
I just had the opportunity to measure a very nice early 70's 40X-BR. Between that and some discussions over at the CMP forum, it looks as though there probably aren't any significant differences between the 40X and the Remington 700 actions. That isn't to say that some actions may need shimming, due to manufacturing tolerances, but there don't appear to be any systematic differences in rear bridge height.
These bases would be produced with engraving specifiying REM 40X, but otherwise would be the same as our current Remington 700 bases. I'm definately going to make them in 20 MOA, would there be any call for 25 or 30 MOA bases? (it's kind of pushing it for most centerfire guns, but with a rimfire, it might be worth it, depending on the scope.)
- Cameron
dlc356 - The bases would be the same price as our regular bases, $137.60 for stainless, and $193.60 for titanium.
I just had the opportunity to measure a very nice early 70's 40X-BR. Between that and some discussions over at the CMP forum, it looks as though there probably aren't any significant differences between the 40X and the Remington 700 actions. That isn't to say that some actions may need shimming, due to manufacturing tolerances, but there don't appear to be any systematic differences in rear bridge height.
These bases would be produced with engraving specifiying REM 40X, but otherwise would be the same as our current Remington 700 bases. I'm definately going to make them in 20 MOA, would there be any call for 25 or 30 MOA bases? (it's kind of pushing it for most centerfire guns, but with a rimfire, it might be worth it, depending on the scope.)
- Cameron
Re: 40-X One piece Base
30MOA would be a good idea for a long range .22LR
It takes about 50 MOA of elevation to get a subsonic 40 grainer to 300 according to my Ballistic Program.
30MOA would be a good idea for a long range .22LR
It takes about 50 MOA of elevation to get a subsonic 40 grainer to 300 according to my Ballistic Program.
Re: 40-X One piece Base
Cameron,
Thanks for the reply. Just remembered (found in closet) I've got a pict. base off a 700 I sold a while back. I'm going to give it a try but if it doesn't cooperate I'll be giving you a call.
Cameron,
Thanks for the reply. Just remembered (found in closet) I've got a pict. base off a 700 I sold a while back. I'm going to give it a try but if it doesn't cooperate I'll be giving you a call.
Re: 40-X One piece Base
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Cameron Murphy</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Carnivore</div><div class="ubbcode-body">
Mr. Murphy:
I bought a spare barrel receiver combo for spare parts when I receive my two rifles. I would be happy to send it to you to pull whatever dimensions you would like to get off the piece. I'll give you a call this week and arrange for delivery to you just as soon as it arrives in my hands. They say 7 to 14 days I should have it.
Best Regards.</div></div>
Unfortunately I'm not an FFL, so I wouldn't be able to receive your action. I can however send out a kit containing oven hardenable modeling clay in a tray that you can use to make an impression of the top of an action. After baking to hardening it, ship it back and I can get the measurements I need from that.
- Cameron </div></div>
Cameron, PM Inbound.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Cameron Murphy</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Carnivore</div><div class="ubbcode-body">
Mr. Murphy:
I bought a spare barrel receiver combo for spare parts when I receive my two rifles. I would be happy to send it to you to pull whatever dimensions you would like to get off the piece. I'll give you a call this week and arrange for delivery to you just as soon as it arrives in my hands. They say 7 to 14 days I should have it.
Best Regards.</div></div>
Unfortunately I'm not an FFL, so I wouldn't be able to receive your action. I can however send out a kit containing oven hardenable modeling clay in a tray that you can use to make an impression of the top of an action. After baking to hardening it, ship it back and I can get the measurements I need from that.
- Cameron </div></div>
Cameron, PM Inbound.
Re: 40-X One piece Base
Mr. Murphy:
The molds are in the oven as I write this and will be on their way to you on Monday. I hope my molding ability is not too bad and you get some useful data from them.
All the best,
John
Mr. Murphy:
The molds are in the oven as I write this and will be on their way to you on Monday. I hope my molding ability is not too bad and you get some useful data from them.
All the best,
John
Re: 40-X One piece Base
Anyone care to explain the signifcance of a/the small gap between the base and reciever? What if you don't use shims and just tighten it down?
thanks
dgwelsh
even my 700 has a slight gap before the screws are tight.
Anyone care to explain the signifcance of a/the small gap between the base and reciever? What if you don't use shims and just tighten it down?
thanks
dgwelsh
even my 700 has a slight gap before the screws are tight.
Re: 40-X One piece Base
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dgwelsh</div><div class="ubbcode-body">Anyone care to explain the signifcance of a/the small gap between the base and reciever? What if you don't use shims and just tighten it down?
thanks
dgwelsh
even my 700 has a slight gap before the screws are tight. </div></div>
I tried explaining this on here and 2 other forums concerning the older 40-X's and 700 receivers. After many "doubtfull" responses and 1 guy (MLHSR) on CMP forums calling me a liar, misleading people and not knowing what I was doing I deleted all my posts here and on the other forums. I was trying to keep people from torqueing, bending etc scope tubes but not worth argueing on the net with people waaayyyy smarter than myself who don't even measure. When MLHSR's arguement was if you use "quality" mounts like Leupold Rifleman bases and rings you won't have a problem!!!!!
There, I am done venting.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dgwelsh</div><div class="ubbcode-body">Anyone care to explain the signifcance of a/the small gap between the base and reciever? What if you don't use shims and just tighten it down?
thanks
dgwelsh
even my 700 has a slight gap before the screws are tight. </div></div>
I tried explaining this on here and 2 other forums concerning the older 40-X's and 700 receivers. After many "doubtfull" responses and 1 guy (MLHSR) on CMP forums calling me a liar, misleading people and not knowing what I was doing I deleted all my posts here and on the other forums. I was trying to keep people from torqueing, bending etc scope tubes but not worth argueing on the net with people waaayyyy smarter than myself who don't even measure. When MLHSR's arguement was if you use "quality" mounts like Leupold Rifleman bases and rings you won't have a problem!!!!!
There, I am done venting.
Re: 40-X One piece Base
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: SDWhirlwind</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dgwelsh</div><div class="ubbcode-body">Anyone care to explain the signifcance of a/the small gap between the base and reciever? What if you don't use shims and just tighten it down?
thanks
dgwelsh
even my 700 has a slight gap before the screws are tight. </div></div>
I tried explaining this on here and 2 other forums concerning the older 40-X's and 700 receivers. After many "doubtfull" responses and 1 guy (MLHSR) on CMP forums calling me a liar, misleading people and not knowing what I was doing I deleted all my posts here and on the other forums. I was trying to keep people from torqueing, bending etc scope tubes but not worth argueing on the net with people waaayyyy smarter than myself who don't even measure. When MLHSR's arguement was if you use "quality" mounts like Leupold Rifleman bases and rings you won't have a problem!!!!!
There, I am done venting. </div></div>
Not that my opinion means squat....but I agree 100% with SDWhirlwind's statement. I have seen it written other places and have seen it on my CMP 40x.
I used a 30moa, 2 piece bases on mine I bought from another member. It makes up for the slight difference plus I get some extra elevation out of the deal. I like the looks of a one piece rail better but this works for me and it is also slightly easier to load being a single shot.
No....I'm not saying it was HARD to load with a rail. Just saying it easier this way.
Keith
***** EDIT ****
BTW, the rings are Burris Signature Zee Rings (using the 20moa inserts) and the scope is a Weaver Grand Slam 6-20x-40mm, fine cross hairs and dot.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: SDWhirlwind</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dgwelsh</div><div class="ubbcode-body">Anyone care to explain the signifcance of a/the small gap between the base and reciever? What if you don't use shims and just tighten it down?
thanks
dgwelsh
even my 700 has a slight gap before the screws are tight. </div></div>
I tried explaining this on here and 2 other forums concerning the older 40-X's and 700 receivers. After many "doubtfull" responses and 1 guy (MLHSR) on CMP forums calling me a liar, misleading people and not knowing what I was doing I deleted all my posts here and on the other forums. I was trying to keep people from torqueing, bending etc scope tubes but not worth argueing on the net with people waaayyyy smarter than myself who don't even measure. When MLHSR's arguement was if you use "quality" mounts like Leupold Rifleman bases and rings you won't have a problem!!!!!
There, I am done venting. </div></div>
Not that my opinion means squat....but I agree 100% with SDWhirlwind's statement. I have seen it written other places and have seen it on my CMP 40x.
I used a 30moa, 2 piece bases on mine I bought from another member. It makes up for the slight difference plus I get some extra elevation out of the deal. I like the looks of a one piece rail better but this works for me and it is also slightly easier to load being a single shot.
No....I'm not saying it was HARD to load with a rail. Just saying it easier this way.
Keith
***** EDIT ****
BTW, the rings are Burris Signature Zee Rings (using the 20moa inserts) and the scope is a Weaver Grand Slam 6-20x-40mm, fine cross hairs and dot.
Re: 40-X One piece Base
thats what I thought. I am currently using Mk4 rings and mk4 one piece base on my cmp 40x. When the front screws are snug/tight, there is a small gap at the back. Approx 1/8th" or less. It is the same on my short action 700, but the gap is slightly less. Given the nature of the rings, they are made to grip the base one way, bending the scope tube is a real concern. Is the general thought that any gap is too much?
again thanks
dgwelsh
thats what I thought. I am currently using Mk4 rings and mk4 one piece base on my cmp 40x. When the front screws are snug/tight, there is a small gap at the back. Approx 1/8th" or less. It is the same on my short action 700, but the gap is slightly less. Given the nature of the rings, they are made to grip the base one way, bending the scope tube is a real concern. Is the general thought that any gap is too much?
again thanks
dgwelsh
Re: 40-X One piece Base
I just got a used Leupold base and rings for the Remington 700 short action (at least that's what I was told they are) and this is how it fit on my 40X non-B action. You can see the gap pretty good.
So I take it I just need the Leupold base that is for a 722 action and not the 700, correct? Since it was temporary anyway I just have the mount and scope with just the front 2 screws holding it in place and the rear floating.
I just got a used Leupold base and rings for the Remington 700 short action (at least that's what I was told they are) and this is how it fit on my 40X non-B action. You can see the gap pretty good.
So I take it I just need the Leupold base that is for a 722 action and not the 700, correct? Since it was temporary anyway I just have the mount and scope with just the front 2 screws holding it in place and the rear floating.
Re: 40-X One piece Base
I've been reading that the dimension difference between old/new 700 and 40X bridges (721/722 and early 700-based 40Xs, vice mounts for late 700 centerfire actions with letters in the serial number -- once upon a time I could tell you the transition year and the exact edition of <span style="font-style: italic"><span style="font-weight: bold">Precision Shooting</span></span> I saw it in my pre-cranky, old fart days) can be compensated for either by shimming or by using two-piece mounts and Burris Signature Zee rings with inserts.
Medium Zee rings are .180" from base of ring to bottom of scope tube, while the High rings are .300". If you used a medium in front and a high in the rear the .120" difference would mount your scope flat without having to shim. The Zee ring inserts will prevent the scope from being twisted, torqued, or sprung (bowed) and at the very least keep your scope from getting some pretty bad ring marks. They may give a slight forward slope effect for added elevation.
Medium (for front)
High ring (for rear)
Aesthetics and a one-piece base would lead me back to Mr. Murphy for a dedicated multi-slot with slope.
Additional stuff:
http://www.surplusrifle.com/shooting/40xcomeshome/index.asp
I've been reading that the dimension difference between old/new 700 and 40X bridges (721/722 and early 700-based 40Xs, vice mounts for late 700 centerfire actions with letters in the serial number -- once upon a time I could tell you the transition year and the exact edition of <span style="font-style: italic"><span style="font-weight: bold">Precision Shooting</span></span> I saw it in my pre-cranky, old fart days) can be compensated for either by shimming or by using two-piece mounts and Burris Signature Zee rings with inserts.
Medium Zee rings are .180" from base of ring to bottom of scope tube, while the High rings are .300". If you used a medium in front and a high in the rear the .120" difference would mount your scope flat without having to shim. The Zee ring inserts will prevent the scope from being twisted, torqued, or sprung (bowed) and at the very least keep your scope from getting some pretty bad ring marks. They may give a slight forward slope effect for added elevation.
Medium (for front)
High ring (for rear)
Aesthetics and a one-piece base would lead me back to Mr. Murphy for a dedicated multi-slot with slope.
Additional stuff:
http://www.surplusrifle.com/shooting/40xcomeshome/index.asp
Re: 40-X One piece Base
please excuse my apparent density, I have an mk4 base approx. 1/16 to 1/8 gap at back of base. How should I fix this problem, shim front or back? new base? two piece bases?
thanks
dgwelsh
please excuse my apparent density, I have an mk4 base approx. 1/16 to 1/8 gap at back of base. How should I fix this problem, shim front or back? new base? two piece bases?
thanks
dgwelsh
Re: 40-X One piece Base
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dgwelsh</div><div class="ubbcode-body">please excuse my apparent density, I have an mk4 base approx. 1/16 to 1/8 gap at back of base. How should I fix this problem, shim front or back? new base? two piece bases?
thanks
dgwelsh </div></div>
I'd say go with a one piece base and shim the rear so there is no gap or use the 2 piece rig like I have in the above post. Either way the Burris Zee Rings with plastic inserts will make your life easier in this case.
Being you already own a one piece base I would find some shim stock and shim the rear so it is even with the front and call it DONE. Just my .02
Keith
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dgwelsh</div><div class="ubbcode-body">please excuse my apparent density, I have an mk4 base approx. 1/16 to 1/8 gap at back of base. How should I fix this problem, shim front or back? new base? two piece bases?
thanks
dgwelsh </div></div>
I'd say go with a one piece base and shim the rear so there is no gap or use the 2 piece rig like I have in the above post. Either way the Burris Zee Rings with plastic inserts will make your life easier in this case.
Being you already own a one piece base I would find some shim stock and shim the rear so it is even with the front and call it DONE. Just my .02
Keith
Re: 40-X One piece Base
Found it:
<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">Remington Receiver Information (change in height of rear receiver bridge):
O.K. guys get ready to file this away somewhere that you can remember where you filed it, unlike me. Since I couldn't find my original information I had to contact Remington directly. It took about 2 weeks but I finally got the straight scoop so here it is as clear as I can make it.
There was a .017" increase in the rear receiver bridge on the model 700's in 1974. Prior to 1974 there were no letter prefixes on the serial numbers. So if you have a gun without a prefix on the serial number it is pre-'74 and the rear receiver bridge is .017" lower than current production guns.
Norma who finally got the answer for me also recommended a book by John Lacy - The Remington 700 - A History and Users Manual. She said it covered them from 1962 through 1987. The only link I have been able to locate for the book is: http://www.remingtonsociety.com/books/M700LacyBook.shtml
I hope this helps clear up an confusion that is out there.
Later,
Byron
Wednesday, July 23, 2003</div></div>
<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">Regarding the Lacy book, according to the web page of the link I provided you can get a hardcover copy directly from the author, for $49.95, plus $5.00 shipping and handling
John Lacy
809 West Stone, Brenham, TX
email: slacy (at) industryinet.com</div></div>
Found it:
<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">Remington Receiver Information (change in height of rear receiver bridge):
O.K. guys get ready to file this away somewhere that you can remember where you filed it, unlike me. Since I couldn't find my original information I had to contact Remington directly. It took about 2 weeks but I finally got the straight scoop so here it is as clear as I can make it.
There was a .017" increase in the rear receiver bridge on the model 700's in 1974. Prior to 1974 there were no letter prefixes on the serial numbers. So if you have a gun without a prefix on the serial number it is pre-'74 and the rear receiver bridge is .017" lower than current production guns.
Norma who finally got the answer for me also recommended a book by John Lacy - The Remington 700 - A History and Users Manual. She said it covered them from 1962 through 1987. The only link I have been able to locate for the book is: http://www.remingtonsociety.com/books/M700LacyBook.shtml
I hope this helps clear up an confusion that is out there.
Later,
Byron
Wednesday, July 23, 2003</div></div>
<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">Regarding the Lacy book, according to the web page of the link I provided you can get a hardcover copy directly from the author, for $49.95, plus $5.00 shipping and handling
John Lacy
809 West Stone, Brenham, TX
email: slacy (at) industryinet.com</div></div>
Re: 40-X One piece Base
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sinister</div><div class="ubbcode-body">Found it:
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sinister</div><div class="ubbcode-body">Found it:
Remington Receiver Information (change in height of rear receiver bridge):
O.K. guys get ready to file this away somewhere that you can remember where you filed it, unlike me. Since I couldn't find my original information I had to contact Remington directly. It took about 2 weeks but I finally got the straight scoop so here it is as clear as I can make it.
There was a .017" increase in the rear receiver bridge on the model 700's in 1974. Prior to 1974 there were no letter prefixes on the serial numbers. So if you have a gun without a prefix on the serial number it is pre-'74 and the rear receiver bridge is .017" lower than current production guns.
Norma who finally got the answer for me also recommended a book by John Lacy - The Remington 700 - A History and Users Manual. She said it covered them from 1962 through 1987. The only link I have been able to locate for the book is: http://www.remingtonsociety.com/books/M700LacyBook.shtml
I hope this helps clear up an confusion that is out there.
Later,
Byron
Wednesday, July 23, 2003</div></div>
Wished that arrogant self absorbed dick who goes by MLHSR on CMP forums would read this. He called me a liar and accused me of spreading misinformation about this subject. He had "six 40-X,XB's and a bunch of early and late 700's and has NEVER had an issue with scope mounting"!!!! Claims all you need is Weaver 35 and 36 bases and Leupold Rifleman rings or Talley's or Seekins(can't remember which) and you won't have any issues. Seems Marty @ Badger, Wendall @ Outback Gunparts, Remington and myself don't know what we are talking about.
I was just trying to make all the buyers of the CMP 40-X's aware there may be alignment issues and to pay attention so as to NOT damage a scope tube in the process. .017 isn't alot but if you get a rear base speced to the max one way and a ring the same you could easily end up with enough difference to damage to a scope tube or at least induce enough stress that it may not track correctly or to its maximum travel.
I had to shim the rear of my XR .030 to correctly align a 2pc Leupold base set and rings. Dickwad MLHSR claimed by me putting it into an ADL stock I "stressed" the receiver of my "precision" 40-XR by changing stocks and that was the issue and NOT a change in manufacturing specs. Guess some people just know everything or cannot admit when they don't.
Just venting as I haven't posted in a while
Re: 40-X One piece Base
I'll bet his scope tubes are probably sprung and damaged. It would serve him right.
I'll bet his scope tubes are probably sprung and damaged. It would serve him right.
Re: 40-X One piece Base
He wouldn't even state whether or not he had ever bothered to measure anything, just called me a liar for posting that the rear bridge had been changed. Also he stated that if you used bases marked for REMINGTON 700 ONLY and not those marked Remington, Weatherby Vanguard etc. I guess in his little mind he thinks Leupold, Weaver, Redfield etc make one set exclusively for the 700 and other sets to fit multiple receivers. LOL Told him to call Marty or even Remington but guess it better to not prove yourself wrong!
What I tried to also emphasize was that Leupold, Weaver, Redfield, Burris etc all make their bases for "current production" guns. If you can find an older base then you should not have problems but make sure and check. I took 2 new never installed Leupold 1pc bases and tried them on the last 40-X I bought. One had .016 clearance under rear of base and the other .024. This with both front screws tightened down. So it also showed just how much tolerance difference can be had in 2 identical Leupy bases.
Just make sure and check guys. Burris Signature rings are probably the easiest solution and by using different inserts you can raise the rear and drop the front to gain as much as .040 by doing both ends. Will add alot of elevation, especially using the 1/8 click scopes like the Nikon 6.5x20, B&L/Bushnell 6x24 etc.
He wouldn't even state whether or not he had ever bothered to measure anything, just called me a liar for posting that the rear bridge had been changed. Also he stated that if you used bases marked for REMINGTON 700 ONLY and not those marked Remington, Weatherby Vanguard etc. I guess in his little mind he thinks Leupold, Weaver, Redfield etc make one set exclusively for the 700 and other sets to fit multiple receivers. LOL Told him to call Marty or even Remington but guess it better to not prove yourself wrong!
What I tried to also emphasize was that Leupold, Weaver, Redfield, Burris etc all make their bases for "current production" guns. If you can find an older base then you should not have problems but make sure and check. I took 2 new never installed Leupold 1pc bases and tried them on the last 40-X I bought. One had .016 clearance under rear of base and the other .024. This with both front screws tightened down. So it also showed just how much tolerance difference can be had in 2 identical Leupy bases.
Just make sure and check guys. Burris Signature rings are probably the easiest solution and by using different inserts you can raise the rear and drop the front to gain as much as .040 by doing both ends. Will add alot of elevation, especially using the 1/8 click scopes like the Nikon 6.5x20, B&L/Bushnell 6x24 etc.
Re: 40-X One piece Base
Dennis thanks for confirming this once again, I have two early Remington 700's a 66 and a 67, and the only base that comes close to working without shims is this one, all others require shimming or I will torque the scope
Dennis thanks for confirming this once again, I have two early Remington 700's a 66 and a 67, and the only base that comes close to working without shims is this one, all others require shimming or I will torque the scope
Re: 40-X One piece Base
Why not use bedding to make up the diff? even on my new Rem 700's when the front is tightened down the rear has a small gap. Just clean the bottom of the base, put some release agent on the receiver and bed it. No silly looking shims needed and on the 3 I have here its hardly noticeable on 2 of them.
Why not use bedding to make up the diff? even on my new Rem 700's when the front is tightened down the rear has a small gap. Just clean the bottom of the base, put some release agent on the receiver and bed it. No silly looking shims needed and on the 3 I have here its hardly noticeable on 2 of them.
Re: 40-X One piece Base
Extreme, thanks for the tip on Murphy Precision. I just ordered a 20 MOA base for my newly purchased (old) 40X 22LR. I briefly mounted a NF NXS with Badger rings on the supplied weaver bases but ran out of elevation at 100 yards. I don't know the year of manufacture because of an extra letter in the barrel stamp, so I wasn't sure what route to take on selecting the correct bases.
Sinister is dead on with the info on the 1974 receiver bridge offset change from .117" to .100". I have Mr.Lacy's "Book of the 700" and that information is stated on page 37 along with a nice graphic.
Cameron informed me that he machines his base with a .114" offset because of so much variation between receivers. So, I should be GTG with his base whether my 40X is pre or post 1974.
I'll update with results after I get the bases. Cameron is very knowledgable and was a pleasure to deal with. Keep him in mind for your next Remington or Savage bases. If his machining is as great as his attitude, you'll be very pleased.
Extreme, thanks for the tip on Murphy Precision. I just ordered a 20 MOA base for my newly purchased (old) 40X 22LR. I briefly mounted a NF NXS with Badger rings on the supplied weaver bases but ran out of elevation at 100 yards. I don't know the year of manufacture because of an extra letter in the barrel stamp, so I wasn't sure what route to take on selecting the correct bases.
Sinister is dead on with the info on the 1974 receiver bridge offset change from .117" to .100". I have Mr.Lacy's "Book of the 700" and that information is stated on page 37 along with a nice graphic.
Cameron informed me that he machines his base with a .114" offset because of so much variation between receivers. So, I should be GTG with his base whether my 40X is pre or post 1974.
I'll update with results after I get the bases. Cameron is very knowledgable and was a pleasure to deal with. Keep him in mind for your next Remington or Savage bases. If his machining is as great as his attitude, you'll be very pleased.
Re: 40-X One piece Base
<span style="font-weight: bold">Update:</span> I received my 20 moa base from Cameron of Murphy Precision last weekend, got it mounted, and out to the range yesterday. Machining, Cerakote, and fit to action is perfection.
I have not bedded the base yet and won't until I have the metal Cerakoted. I dropped the 40X into a GAP Camo A-5. Below are a few pix of the rifle, the base, and a few targets. The ammo used was the cheap Federal Champion stuff. This was the same setup used with the Weaver bases which ran out of elevation and produced 4 to 5 inch groups at 100 yards. The ONLY change was removing the Weaver bases and installing the Murphy Precision 20 moa base. I will try the Gold Medal and Wolf Match next.
<span style="font-weight: bold">50 Yard Dots</span> Took a while to get her dialed in. Doubled on center target.
<span style="font-weight: bold">100 Yards: 5 at head and 20 at chest</span>
<span style="font-weight: bold">I highly recommend Murphy Precision. Great guy who makes a great product.</span>
<span style="font-weight: bold">Update:</span> I received my 20 moa base from Cameron of Murphy Precision last weekend, got it mounted, and out to the range yesterday. Machining, Cerakote, and fit to action is perfection.
I have not bedded the base yet and won't until I have the metal Cerakoted. I dropped the 40X into a GAP Camo A-5. Below are a few pix of the rifle, the base, and a few targets. The ammo used was the cheap Federal Champion stuff. This was the same setup used with the Weaver bases which ran out of elevation and produced 4 to 5 inch groups at 100 yards. The ONLY change was removing the Weaver bases and installing the Murphy Precision 20 moa base. I will try the Gold Medal and Wolf Match next.
<span style="font-weight: bold">50 Yard Dots</span> Took a while to get her dialed in. Doubled on center target.
<span style="font-weight: bold">100 Yards: 5 at head and 20 at chest</span>
<span style="font-weight: bold">I highly recommend Murphy Precision. Great guy who makes a great product.</span>
Re: 40-X One piece Base
I have Ken Farrell 1 piece bases that work great on my 40xHB. They also sit a little higher so there is more room for your fingers as you single load.
I have Ken Farrell 1 piece bases that work great on my 40xHB. They also sit a little higher so there is more room for your fingers as you single load.
Re: 40-X One piece Base
I also want to highly recommend cameron murphy. great product, even better service.
I would definitely go to him again.
thanks
dgwelsh
I also want to highly recommend cameron murphy. great product, even better service.
I would definitely go to him again.
thanks
dgwelsh
Re: 40-X One piece Base
Thanks for the info; I'll need it once I finally decide which riflescope to mount on my own Rem40X HB rimfire trainer.
Thanks for the info; I'll need it once I finally decide which riflescope to mount on my own Rem40X HB rimfire trainer.
Re: 40-X One piece Base
Here was my 40X adventure..
http://www.snipershide.com/forum/ubbthre...562#Post1592562
I bed my .22 bases to approx 30 MOA for long range use, but all my scopes have enough elevation for this.
Here was my 40X adventure..
http://www.snipershide.com/forum/ubbthre...562#Post1592562
I bed my .22 bases to approx 30 MOA for long range use, but all my scopes have enough elevation for this.
Re: 40-X One piece Base
I can not located the 40x base on the Murphy website. I wonder if I can call and order direct?
I can not located the 40x base on the Murphy website. I wonder if I can call and order direct?
Re: 40-X One piece Base
Pinmaster -
Yes, you can give me a call at 800-553-8527 to order a 40-X base. I haven't had a chance to put a lot of our newer products up on the website.
- Cameron
Pinmaster -
Yes, you can give me a call at 800-553-8527 to order a 40-X base. I haven't had a chance to put a lot of our newer products up on the website.
- Cameron
Re: 40-X One piece Base
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sinister</div><div class="ubbcode-body">Found it:
<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">Remington Receiver Information (change in height of rear receiver bridge):
O.K. guys get ready to file this away somewhere that you can remember where you filed it, unlike me. Since I couldn't find my original information I had to contact Remington directly. It took about 2 weeks but I finally got the straight scoop so here it is as clear as I can make it.
There was a .017" increase in the rear receiver bridge on the model 700's in 1974. Prior to 1974 there were no letter prefixes on the serial numbers. So if you have a gun without a prefix on the serial number it is pre-'74 and the rear receiver bridge is .017" lower than current production guns.
Norma who finally got the answer for me also recommended a book by John Lacy - The Remington 700 - A History and Users Manual. She said it covered them from 1962 through 1987. The only link I have been able to locate for the book is: http://www.remingtonsociety.com/books/M700LacyBook.shtml
I hope this helps clear up an confusion that is out there.
Later,
Byron
Wednesday, July 23, 2003</div></div>
<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">Regarding the Lacy book, according to the web page of the link I provided you can get a hardcover copy directly from the author, for $49.95, plus $5.00 shipping and handling
John Lacy
809 West Stone, Brenham, TX
email: slacy (at) industryinet.com</div></div> </div></div>
I just found this thread and was surprised to see the information I posted on Sniper Country nearly 7 years ago is still helping. Good memory sinister.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sinister</div><div class="ubbcode-body">Found it:
<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">Remington Receiver Information (change in height of rear receiver bridge):
O.K. guys get ready to file this away somewhere that you can remember where you filed it, unlike me. Since I couldn't find my original information I had to contact Remington directly. It took about 2 weeks but I finally got the straight scoop so here it is as clear as I can make it.
There was a .017" increase in the rear receiver bridge on the model 700's in 1974. Prior to 1974 there were no letter prefixes on the serial numbers. So if you have a gun without a prefix on the serial number it is pre-'74 and the rear receiver bridge is .017" lower than current production guns.
Norma who finally got the answer for me also recommended a book by John Lacy - The Remington 700 - A History and Users Manual. She said it covered them from 1962 through 1987. The only link I have been able to locate for the book is: http://www.remingtonsociety.com/books/M700LacyBook.shtml
I hope this helps clear up an confusion that is out there.
Later,
Byron
Wednesday, July 23, 2003</div></div>
<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">Regarding the Lacy book, according to the web page of the link I provided you can get a hardcover copy directly from the author, for $49.95, plus $5.00 shipping and handling
John Lacy
809 West Stone, Brenham, TX
email: slacy (at) industryinet.com</div></div> </div></div>
I just found this thread and was surprised to see the information I posted on Sniper Country nearly 7 years ago is still helping. Good memory sinister.
